Network · AS1851

AS1851 Adelaide University

AS1851 (Adelaide University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Network check ASN

AS1851

  • OwnerAdelaide University
  • KindInternet service provider
  • Servers, not peopleno
  • IPv4 addresses134,656
  • IPv4 ranges17
  • IPv6 ranges1
Risk score0

Nothing suspicious found.

Largest IPv4 ranges

  • 130.220.0.0/16
  • 129.127.0.0/17
  • 129.127.128.0/18
  • 129.127.192.0/19
  • 129.127.240.0/20
  • 129.127.232.0/21
  • 45.121.132.0/22
  • 43.241.200.0/22
  • 129.127.228.0/22
  • 129.127.224.0/23
  • 103.37.130.0/23
  • 203.9.156.0/24

Ranges and owner from DB-IP (CC BY 4.0), updated 2026-10-21.

Check an IP address →

Detect it in code

Spot AS1851 traffic at signup.

Send the visitor's IP. The response includes the ASN, the owner and flags.hosting.

curl https://veqen-app.com/v1/ip/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip": "203.0.113.7"}'
import os, requests

r = requests.post(
    "https://veqen-app.com/v1/ip/check",
    headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
    json={"ip": "203.0.113.7"},
    timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])
const res = await fetch("https://veqen-app.com/v1/ip/check", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"ip": "203.0.113.7"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);
Questions

About AS1851

Is AS1851 a datacenter or VPN network?

AS1851 (Adelaide University) looks like an internet service provider, so its addresses are mostly real home, business or mobile connections.

Who owns AS1851?

AS1851 is registered to Adelaide University. It announces about 134,656 IPv4 addresses.

How do I detect traffic from AS1851?

Call the Veqen IP check with the visitor's address. The response includes the ASN, the owner and whether the network is a datacenter, VPN network, relay or ISP.